Three Mile Island: Measuring The Impact 35 Years Later

In the history of U.S. commercial nuclear power plant operating, Three Mile Island was the most serious accident.

Credit Flickr user Ted Van Pelt

Friday marks the 35th anniversary of the worst nuclear accident in U.S. history. On March 28, 1979, one of the reactors at the The Three Mile Island nuclear power plant in Dauphin County partially melted down.

Back then, no one knew exactly what was going to happen. The incident was unprecedented.

Former Governor Dick Thornburgh was at the center of the crisis. He marked the anniversary at an event Thursday at Penn State’s Harrisburg campus in Middletown–not far from the plant.

Thornburgh remains troubled the country still has no long-term plan to handle its nuclear waste.